.box{width:100%;}
.header{width:100%;height:70px;background:skyblue;display:flex;align-items:center;}
.header span{flex-grow:1;text-align:center;}
.list{width:100%;}
.list .case{width:90%;margin:10px auto;display:flex;justify-content:space-between;
background:#fff;box-shadow:4px 4px 5px lightgray;
}

